Tuning the size and the optical properties of ZnO mesocrystals synthesized under solvothermal conditions

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Distaso M, Segets D, Wernet R, Peukert W, Klupp Taylor R
Zeitschrift: Nanoscale
Jahr der Veröffentlichung: 2012
Band: 4
Heftnummer: 3
Seitenbereich: 864-873
ISSN: 2040-3364
Sprache: Englisch


Abstract


Mesocrystals are a promising class of nanomaterials enabling new optical and mechanical properties due to their three dimensional organization of primary crystallites sharing a common crystallographic orientation. In the present article, the influence of process parameters such as temperature profile and stirring on the primary and secondary size of ZnO mesocrystals synthesized under solvothermal conditions has been investigated. In general, small but noticeable lattice strain is introduced to the particles during the synthesis process. Additionally, with increasing mass transport the fusion of primary crystallites due to coarsening is enhanced. A closer analysis revealed an influence of the polymer chain length on the final particle structure throughout different hierarchical levels. Based on our findings a reaction mechanism with nucleation and growth taking place embedded in poly-N-vinylpyrrolidone (PVP), followed by a polymer-mediated step of oriented aggregation and subsequent coarsening is proposed. In consequence, the careful control throughout all hierarchical levels of particle synthesis allows fine-tuning of the optical properties of ZnO mesocrystals which show a high UV absorption and minimal scattering in the visible region. © 2012 The Royal Society of Chemistry.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Distaso, Monica Dr.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Klupp Taylor, Robin Prof.
Professur für Nanostructured Particles
Peukert, Wolfgang Prof. Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Segets, Doris Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials
Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)


Forschungsbereiche

A1 Functional Particle Systems
Exzellenz-Cluster Engineering of Advanced Materials


Zitierweisen

APA:
Distaso, M., Segets, D., Wernet, R., Peukert, W., & Klupp Taylor, R. (2012). Tuning the size and the optical properties of ZnO mesocrystals synthesized under solvothermal conditions. Nanoscale, 4(3), 864-873. https://dx.doi.org/10.1039/c1nr11226k

MLA:
Distaso, Monica, et al. "Tuning the size and the optical properties of ZnO mesocrystals synthesized under solvothermal conditions." Nanoscale 4.3 (2012): 864-873.

BibTeX: 

Zuletzt aktualisiert 2019-05-06 um 16:08